Durability Properties of Inorganic Polymer Concrete Using Fly Ash and Slag

摘要

The potential durability of inorganic polymer concrete made with fly ash and slag wasinvestigated by comparing the durability properties of a range of inorganic polymer and Portland cementbasedconcrete. Concrete was cured at ambient and elevated temperatures to simulate normal site andprecast concrete conditions. Findings from porosity, oxygen permeability and chloride resistance testingshow that inorganic polymer concrete has significant differences in microstructure to Portland cementconcrete. The higher porosity of inorganic polymer concrete was found to be caused by differences inpaste porosity and the presence of compaction voids due to the viscous nature of the material. Highstrength IPC mixes had moderate permeability but lower strength IPC mix had poor resistance to permeation.Chloride resistance of IPC was not consistent and was generally much poorer than PC-based concrete.Durability properties of inorganic polymer concrete were found to vary considerably depending onmix design and initial curing and did not always follow predictable trends found with PC-based concrete.